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Helion

Mechanical Engineering Summer 2027 Intern

Everett, WA
Salary
$48 per hour
Level
Intern
Work type
On-site · Everett

Not stated in the posting: visa.

Open. First seen 2 October 2026.

Apply on the company's site →

About the role

About Helion

Helion's standard text

We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.

Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.

Helion's standard text

This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.

What You Will Be Doing:

As a Mechanical Engineering Intern at Helion you'll be at the forefront of fusion technology development. Helion internships are designed to give real ownership to help train the next generation of fusion engineers. You'll collaborate on R&D efforts, explore potential system upgrades to enhance overall performance, and contribute fresh ideas as we work on next-generation machines. This internship will require solving engineering problems critical to deploying fusion energy to the world. This is a 12-week onsite internship at our Everett, WA office.

You Will:

  • Own and understand designs across subsystems in fields including electromagnetics, structures, fluids, thermal, and control systems
  • Learn from historical engineering approaches, design novel hardware, and test your solutions
  • Fix hardware issues as they arise on integrated fusion generators
  • Apply both engineering first-principles and method-based thinking to challenging problems
  • Learn from experts to expand your engineering skillset and domain knowledge

Required Skills:

  • Ability to work full time, onsite in Everett, WA for a minimum of 12 consecutive weeks during summer 2027
  • Graduation date of Winter 2027 or Spring 2028
  • Currently enrolled in a Bachelor’s degree in Mechanical Engineering or related field
  • GPA of 3.0 or above
  • Hands-on exposure to a variety of engineering disciplines (e.g. mechanical, electrical, fluids)
  • Experience with 3D CAD software (e.g. NX, SolidWorks) and GD&T

#LI-Onsite #LI-KL1

What this role asks for

Particular to this role

GD&T · SolidWorks

Rare in Helion's other 47 open postings.

76% of this description is written for the role. The rest is Helion's standard text, folded away below.

Read against Helion's other open postings on this site.

The team: Mechanical Engineering HIRES STEADILY

This role is one of 9 open in Mechanical Engineering. 5 were posted in the last 30 days and the oldest in March: a team that hires all year rather than one being built.

WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS

SolidWorks (6 of 9), ANSYS (3 of 9), FEA (3 of 9), GD&T (3 of 9)

OTHER ROLES ON THIS TEAM

From the team and dates on Helion's own job board.

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